#556EB5#556EB5

#556EB5 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.2% C 0.115 H 267.9°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#556EB5
RGB	rgb(85, 110, 181)
HSL	hsl(224, 39%, 52%)
HSV	hsv(224, 53%, 71%)
CMYK	cmyk(53%, 39.2%, 0%, 29%)
CIE-LAB	lab(47.52, 11.53, -40.50)
CIE-LCH	lch(47.52, 42.11, 285.89°)
OKLab	oklab(55.16% -0.0042 -0.1146)
OKLCH	oklch(55.16% 0.115 267.9)
XYZ	xyz(17.6600, 16.4181, 45.9455)
Luminance	0.1642 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556EB5 #B59C55

analogous

#559EB5 #556EB5 #6C55B5

triadic

#556EB5 #B5556E #6EB555

tetradic

#556EB5 #B5559E #B59C55 #55B56C

square

#556EB5 #B5559E #B59C55 #55B56C

split-complementary

#556EB5 #B56C55 #9EB555

monochromatic

#2C3A64 #3E538F #556EB5 #8092C8 #AAB7DA

Accessibility & contrast

On white

4.90

#556EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#556EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556EB5

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556EB5	#FFFFFF	#000000	##FFFFFF
##556EB5	1.00	4.90	4.28	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5175B8

Deuteranopia (green-blind)

#476DB3

Tritanopia (blue-blind)

#267D89

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556eb5;
/* rgb */ color: rgb(85, 110, 181);
/* oklch */ color: oklch(55.2% 0.115 267.9);

Tailwind

colors: {
  custom: {
    50: '#8b97cb',
    500: '#556eb5',
    950: '#000000',
  },
}

SCSS

$custom: #556eb5;
$custom-light: #8b97cb;
$custom-dark: #000000;

JSON

{
  "hex": "#556eb5",
  "rgb": {
    "r": 85,
    "g": 110,
    "b": 181
  },
  "hsl": {
    "h": 224.375,
    "s": 39.344,
    "l": 52.157
  },
  "oklch": {
    "l": 0.55159,
    "c": 0.11472,
    "h": 267.9
  },
  "luminance": 0.16419
}

Semantic roles & 50–950 ramp

primary

#556EB5

secondary

#C8BD9E

accent

#B059CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556EB5

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →